@stdlib/regexp-native-function NPM

reNativeFunction

Regular expression to match a native function.

Installation

npm install @stdlib/regexp-native-function

Usage

var reNativeFunction = require( '@stdlib/regexp-native-function' );

reNativeFunction()

Returns a regular expression to match a native function.

var RE_NATIVE_FUNCTION = reNativeFunction();
var bool = RE_NATIVE_FUNCTION.test( Date.toString() );
// returns true

reNativeFunction.REGEXP

Regular expression to match a native function.

var bool = reNativeFunction.REGEXP.test( Date.toString() );
// returns true

Examples

var Int8Array = require( '@stdlib/array-int8' );
var reNativeFunction = require( '@stdlib/regexp-native-function' );

var RE_NATIVE_FUNCTION = reNativeFunction();
function isNativeFunction( fcn ) {
    return RE_NATIVE_FUNCTION.test( fcn.toString() );
}

var bool = isNativeFunction( Math.sqrt );
// returns true

bool = isNativeFunction( String );
// returns true

bool = isNativeFunction( Int8Array );
// returns true

bool = isNativeFunction( Date );
// returns true

bool = isNativeFunction( function noop() {} );
// returns false

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.